A mailer box is a tried-and-true e-commerce box for subscriptions, influencer/corporate gifts, sales kits, and more. Get creative with how you want consumers to receive your custom-designed mailer. Custom-designed mailer boxes add extra value to your product and enhance your brand. The more you buy, the less you pay per item!
Mailer boxes (often called roll‑end tuck‑top (RETT)) are sturdy, self‑locking corrugated boxes designed for an elevated unboxing experience and reliable shipping. Their hinged lid, dust flaps, and double‑thick walls make them perfect for subscription kits, DTC shipments, PR influencer boxes, and premium gifting. Compared to standard shipping boxes, mailers offer a more polished presentation while still withstanding carrier networks. Thick walls make them perfect for subscription kits, DTC shipments, PR influencer boxes, and premium gifting. Compared with standard shipping boxes, mailers offer a more polished presentation while still withstanding parcel networks.
Great for: beauty & skincare kits, apparel & accessories, tech merch, sampling programs, welcome kits, and holiday gifting.
Whether you’re creating your first mailer box or refreshing an existing design, our online Design Studio or the ability to download the die line and design in your own tool gives you full creative control. In the Design Studio you can upload artwork, add your logo, adjust colors to your brand guidelines (HEX, CYMK or RGB) and preview your mailer box design in 3D before you order. Choose from kraft, white, or premium finishes to match your brand aesthetic.
At DIYPack, custom packaging should be accessible at any scale. Our online design tools and no minimums give emerging brands enterprise‑level polish without big‑box commitments.
Enter exact inside dimensions to fit your product.
Order only what you need, the more you buy the more you save.
Orders ship in 5 – 7 business days.
Upload print ready art or customize templates in minutes.
No tooling or long setup times.
Local production you can count on.
Start with a small run to validate your design, then reorder or scale as sales grow. With our Sample Program, you can order 1, and when you're ready to place your full order of 100 boxes or more, we'll give you a credit equal to your Sample Box cost ($50–$60 value).
Clean, gift‑like reveal; protects contents in transit
Great stacking strength; holds up in parcel shipping
Right‑size your packaging to cut DIM weight and void fill
Crisp detail outside; optional inside print for a full‑brand experience
Kraft (natural brown), White (uncoated matte), Premium White (gloss)
Up to 99% recycled content; SFI®‑certified materials; water‑based inks available
We engineer smarter packaging that’s easier on the planet and better for your margins.
Learn more on our Sustainability page.
Whether you’re launching or refreshing packaging, DIYPack delivers:
Instant pricing and transparent costs
Estimated shipping prices
Fast lead times with 5-7 business day production
Design Studio for easy artwork customization and 3D previewing to brand boxes instantly
Made by a direct manufacturer – no middlemen markups
Sustainable materials that do not sacrifice style
E flute or B flute corrugate (flute changes automatically based on box size entered)
Full bleed exterior; optional interior print
Optimized for parcel carriers; choose custom sizing to reduce DIM
Quick side‑by‑side comparison of three common corrugated packaging formats.
Common questions about custom mailer boxes.